EP 2820457 B1 20190508 - HIGHLY NONLINEAR OPTICAL FIBER WITH IMPROVED SBS THRESHOLD AND MODERATE ATTENUATION
Title (en)
HIGHLY NONLINEAR OPTICAL FIBER WITH IMPROVED SBS THRESHOLD AND MODERATE ATTENUATION
Title (de)
STARK NICHTLINEARE OPTISCHE FASER MIT VERBESSERTER SBS-SCHWELLE UND MODERATER DÄMPFUNG
Title (fr)
FIBRE OPTIQUE EXTRÊMEMENT NON LINÉAIRE AYANT UN SEUIL DE DIFFUSION DE BRILLOUIN STIMULÉE (SBS) AMÉLIORÉ ET UNE ATTÉNUATION MODÉRÉE
Publication
Application
Priority
- US 201261605968 P 20120302
- US 2013028816 W 20130304
Abstract (en)
[origin: WO2013131076A1] A highly nonlinear optical fiber having an improved stimulated Brillouin scattering threshold is provided. The fiber includes a central core region made substantially from silica doped with aluminum, a trench region surrounding the central core region, and a silica cladding surrounding the trench region. The refractive index profile of the fiber is optimized. A refractive index difference of the central core region relative to the cladding (Deltan+) is less than 26 x 10-3, and more preferably at or near 21 x 10-3. A refractive index difference of the trench region relative to the cladding (Deltan-) is less than -5 x 10". The trench region is preferably doped with fluorine. The aluminum doping level of the central core region is preferably less than 14 wt% A1. A fiber doped with aluminum having this refractive index profile exhibits a significantly higher figure of merit (PthƳLeff) than conventional germanium-doped fibers.
IPC 8 full level
G02B 6/028 (2006.01); G02B 6/036 (2006.01); G02F 1/365 (2006.01)
CPC (source: EP US)
G02B 6/028 (2013.01 - US); G02F 1/365 (2013.01 - EP US); G02B 6/03627 (2013.01 - EP US); G02B 2006/12061 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2013131076 A1 20130906; EP 2820457 A1 20150107; EP 2820457 A4 20151021; EP 2820457 B1 20190508; JP 2015512063 A 20150423; JP 6122041 B2 20170426; US 2015016792 A1 20150115; US 9366811 B2 20160614
DOCDB simple family (application)
US 2013028816 W 20130304; EP 13755912 A 20130304; JP 2014560126 A 20130304; US 201314381910 A 20130304